TOTAL KNEE REPLACEMENT:

It’s replacing or resurfacing of the worn out smooth lining (cartilage) with metal lining hence restoring the functionality of the joint.

Pre op Evaluation:
  • Clinical examination
  • X rays of the knee joint
  • Blood investigations
  • CUE
  • Chest x ray
  • ECG
  • 2D echo
  • Physician and cardiologist opinion
  • Anaesthetic check up
Knee - Joint
On the day of surgery:
  • Surgery takes around an hour for single knee replacement.
  • Bilateral knee replacements are done simultaneously if needed.
  • Patients are kept in ICU overnight if warranted.
Knee Replacement Procedure:
  • Preparation of the bone: The damaged cartilage surfaces at the ends of the femur and tibia are removed along with a small amount of underlying bone to make it even.
  • Positioning implants: The removed cartilage and bone is replaced with metal components that recreate the surface of the joint. These implants are cemented or “press-fit” onto the bone.
  • Resurface the patella: The undersurface of the patella (knee cap) is resurfaced with a plastic button. Most of the times resurfacing the patella is not required.
  • Insert a spacer: A medical grade plastic spacer is inserted between the metal components to create a smooth gliding surface.
Postoperative period:
  • Patient is made to walk with help of walker by the physiotherapist
  • Knee range of motion & strengthening exercises are taught during the hospital stay
  • Hospitalization is for 3-4 days
  • It will take 4-6 weeks on an average to get back to normal and walk independently with walker depending on individuals.
Complications:
Intraoperative:
  • Damage to neurovascular structures
  • Damage to collateral ligaments
  • Fractures
  • Anterior femur notching
Post operative:
  • Thromboembolism
  • Infection
Late complications:
  • Infection
  • Instability
  • Aseptic loosening
  • Periprosthetic fracture
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